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b5599d35f9
This PR condenses the namespaces in the tint/transform folder. Change-Id: Idf448870ccf90f892b9186f7aab7bb0ac9deda17 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/86029 Auto-Submit: Dan Sinclair <dsinclair@chromium.org> Reviewed-by: Ben Clayton <bclayton@google.com> Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
// Copyright 2022 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_TINT_TRANSFORM_EXPAND_COMPOUND_ASSIGNMENT_H_
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#define SRC_TINT_TRANSFORM_EXPAND_COMPOUND_ASSIGNMENT_H_
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#include "src/tint/transform/transform.h"
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namespace tint::transform {
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/// Converts compound assignment statements to regular assignment statements,
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/// hoisting the LHS expression if necessary.
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///
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/// Before:
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/// ```
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/// a += 1;
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/// vector_array[foo()][bar()] *= 2.0;
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/// ```
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///
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/// After:
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/// ```
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/// a = a + 1;
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/// let _vec = &vector_array[foo()];
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/// let _idx = bar();
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/// (*_vec)[_idx] = (*_vec)[_idx] * 2.0;
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/// ```
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///
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/// This transform also handles increment and decrement statements in the same
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/// manner, by replacing `i++` with `i = i + 1`.
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class ExpandCompoundAssignment
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: public Castable<ExpandCompoundAssignment, Transform> {
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public:
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/// Constructor
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ExpandCompoundAssignment();
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/// Destructor
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~ExpandCompoundAssignment() override;
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/// @param program the program to inspect
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/// @param data optional extra transform-specific input data
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/// @returns true if this transform should be run for the given program
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bool ShouldRun(const Program* program,
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const DataMap& data = {}) const override;
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protected:
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/// Runs the transform using the CloneContext built for transforming a
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/// program. Run() is responsible for calling Clone() on the CloneContext.
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/// @param ctx the CloneContext primed with the input program and
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/// ProgramBuilder
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/// @param inputs optional extra transform-specific input data
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/// @param outputs optional extra transform-specific output data
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void Run(CloneContext& ctx,
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const DataMap& inputs,
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DataMap& outputs) const override;
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};
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} // namespace tint::transform
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#endif // SRC_TINT_TRANSFORM_EXPAND_COMPOUND_ASSIGNMENT_H_
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